Mitsubishi Heavy Industries SL Series Service Manual page 190

No.2
Customer
Item to be Valve stem-to-guide clearance and
measured valve stem diameter
Measuring location
Measurement
Name
No. Location
Inlet
1
Exhaust
Inlet
2
Exhaust
Inlet
3
Exhaust
Inlet
4
Exhaust
Engine Inspection Sheet
Engine model
Engine number
Standard value
Valve guide
inner
diameter
Valve stem
diameter
Valve
stem-to-guide
clearance
Valve guide inner
diameter
A B
X Y X Y
Remarks
Nominal
value
φ6.6
Inlet
(0.260)
φ6.6
Exhaust
(0.260)
φ6.6
Inlet
(0.260)
φ6.6
Exhaust
(0.260)
Inlet -
Exhaust -
Valve stem diameter
A B
X Y X Y
Approved by
S
Date
Unit
mm (in.)
Standard
value
6.600 to 6.615
(0.2600 to 0.2606)
6.600 to 6.615
(0.2600 to 0.2606)
6.565 to 6.580 6.500
(0.2586 to 0.2592) (0.256)
6.530 to 6.550 6.500
(0.2572 to 0.2580) (0.256)
0.020 to 0.050 0.100
(0.0008 to 0.0020) (0.004)
0.050 to 0.085 0.150
(0.0020 to 0.0033) (0.006)
Valve stem-to-guide
clearance
A B
Max. Min. Max.
Confirmed by Measured by
L
Limit
-
-
Min.